Window-screen.



. F. L. MIGHAELS & G. WELLING.

WINDOW SCREEN.

APPLICATION FILED 0021.4, 1909.

974,689., Patented Nov. 1,1910.

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UNITED sir-Ares PATENT OFFICE.

FRANK L. MIQHAELS AND GEORGE WELLING, OF COVINGTON, KENTUCKY.

WINDOW-SCREEN.

Specification of Letters Patent.

Patented Nov. 1, 1910.

Application filed October 4, 1909. Serial No. 520,788.

' each other, whereby the screen as a whole -is an enlarged detailed view of'one of the can be adjusted to varying widths of window frames.

The object of our invention is to. provide a window screen formed of two duplicate sections, with means for slidably securing the sections together to form an adjustable screen. v

Another object of our invention is to'provide a screen frame. formed of sheet metal,

in which the sides are all of the same formation, together with the particular means for securing the side strips at their meeting edges.

The features of the invention are more fully set forth in the description of the accompanying drawings,forming a part of this specification. in which Figure l is a front View thereof. Fig. 2

corners. Fig. 3 is a section on line a, a, Fig. 1, of one of the frame sections. Fig. 4 is a section on line a, 0, Fig. 2. Fig. 5 is asection on line a, m, Fig. 1. Fig. 6 is a section on line 20, w, Fig. 1. Fig. 7 is a section on line b, Fig. 1. Figs. 8 and 9 are cross sections, through the frame strip, showing a modified form of attaching the strips.

The screen comprises two frame sections 1, 2, of duplicate construction, with intermediate top and bottom connecting plates 3, preferably secured to each'of the sections, and of such formation as to permit the 0p posing strips to be intermeshed and slid thereon. By making all the frames of a given formation, the material canbe turned out in strips and made up into sections requiring but single sets of dies, in which no right and left formations are required. This is a material saving in the cost of the manufacture and assemblage in the manufacture of stock formed screens. As both frame sections are duplicates, it will only be necessary to describe the construction of one of the sections.

The frame is preferably constructed of sheet metal formed in strips primarily as shownin cross section, Fig. 6, in which :--1 represents the body portion of the strip, formed with a medial rib or bead 2 to strengthen the same. 4 represents a right angled bend, adapted to form a hook when turned parallel with the body portion 1, between which the wire cloth 5 is secured.

The opposite edge of the strip 1 is provided with the hooked bend 6, opposite the hook bend 4. The edges of the strip are preferably bent to form an edge bead 7, to proyide a rounded edge, especially desirable upon the edge over which the Wire cloth passes, preventing the edges from injuring "the cloth, or forming an obstruction which would follow were the edges left sharp. The strips are preferably formed with the hooked ends 4, turned toaright angled flange and folded down upon the Wire cloth, after the strip has been formed into a frame.

The corners of each screen frame are preferably made, as illustrated in'Figs. 2, 4, by cutting each strip to a miter edge and pro viding a lock plate 8, for securing the two ends of the strips to form a frame. The lock plate 8 is preferably made from a sheet of metal of right-angle form, overlapping the meeting corner ends of the frame strips, with its marginal right-angled edges engaged between the body portion 1 and hook bends 4 and -6,-of each of said frame strips. 9 represents a slot formed in the lock-plate with the metal in rear thereof slightly arched so as to bring the same above' the plane of the remainder portion of the metal plate, and through which slot the meeting corner edges of the hook bends 4 ofeach strip, project, as illustrated in Fig. 4. Thus a port-ion of the plate occupies a position below the hook bends with its intermediate portion above the hook bends 4 of both meeting ends of the frame strips. This forms a very secure corner lock and can be additionally secured'by riveting the corner plate 8 to each strip. I

Each frame section is provided with three of its sides formed from a strip of metal, as described, forming the outside edges of the frame, with the fourth side or edge provided with a tie-strip 10, connecting the 9, one of ends of two of the frame strips, for forming a frame section. This strip is preferably connected to the top and bottom strips of theframe section, as illustrated in Fig. 7, and 1s U-shaped in cross section, with the limbs bent upon themselves and betweenwhlch the wire cloth is secured, and may be provided along one side thereof with a rib 11, adapted to engage the adjacent wirecloth 0 the second section, so as to close the overlapping ends of the wire-cloth. The tie-strip 10 is slit at its ends, and one of the limbs thereof provided with a hook bend 14, engaging with the hook bend 4, the opposite limb l4: extended to engage be-, tween the hook bend 6. The two' sections are slidably united with the tie-strips intermediate, as follows: 13 represents a connecting plate, see Fig. 3, adapted to lie and be secured between the hook formations 4 and 6 of the frame strips, and rovided along .one edge with a U- haped end 12, with one limb projected exterior'ly and parallel with the hook formation 6, of the strip to which it is secured, adapted to form a slideway to receive a limb of the hook 6, of the frame strip of the second section,'forming a slidable connection between the two frame sections, for adjusting the width of the screen to an size of window. These slide-plates are a l of duplicate construction and secured to the respective frame strips, one in rear of each end of each tie strip, to receive the hook bend 6 of the opposing frame strip.

In the modification shown in F i 8 and the limbs of the U-shape tie-stri 10 is not provided with the end hook ben s engaging over the hooks 4 of the frame stn s, but is cut away, while its opposite lim is extended and connected to a respective frame strip by means of a rivet.

Having described our invention, we claim 2-- 1. A window screen frame formed of sheet metal, and comprising strips each having a body portion with book bends on each 'e ge thereof, the meeting ends of said strips being cut on a miter, a connecting corner plate engaged between both hook bends of each strlp, a notch being formed into said connecting plate through which the meeting edges of the inner hook bends project. i

2. A window 1 screen, comprising two slidably connected frame sections,- each section composed of strips of sheet metal each having a body portion andhookbends on each edge thereof, said strips forming three sides of the frame, metal, .U-shaped in cross section, with its ends slitted forming two separated limbs, the one provided with a hook bend adapted to engage with one of the hook bends of the frame strip, the opposite limb engaging the opposite strip hook bend.

3. A window screen, comprising tw'o slida tie-strip formed of sheet ably connected frame sections, each section composed of strips of sheet metal, each having a body portion and hook bends formed on each edge thereof, one of said hook bends adapted to form clasping means for the wire cloth, and a plate fixed to two sides of each frame section, provided with a bend forming a slide-wa engaging with the relative opposed hook end of the second frame section. i

In testimony whereof, we have hereunto set our hands.

FRANK L. MIOHAELS. GEORGE WELLING.

Witnesses:

Omvan B. KAISER, Emma Smnmz. 

